Era
20th century
13
1945-
10
19th century
9
1960-
3
1980-
3
21st century
3
1812-1870
2
1961-1969
2
16th century
1
17th century
1
1868-1963
1
1878-1968
1
1893-1976
1
1898-1951
1
1900-1999
1
1918-1932
1
1945-1989
1
1949-1976
1
1960-1980
1
1969-
1
1971-
1
1989-
1
1990-
1
1993-
1
1995-
1
Britiah occupation, 1765-1947
1
Cultural Revolution, 1966-1976
1
To 1865
1
To 1964
1